

The solid green line is the Target Rate of improvement for the 12-week duration. The slope of this line is determined by the difference between the baseline score and the percentage needed to meet the Moderate or Aggressive goal. This includes a number that shows the expected percentage points gained each week (in this case, it is 5.1818% per week for 12 weeks to reach the aggressive goal of 80%).
The yellow line is the Current Rate of Improvement and is calculated based on the student's weekly results and estimates which way the student is heading based on their current trend. This line is calculated using a "least-squares" regression equation and requires at least 3 results. This shows the student's actual growth (in this case, it is 4.2518).